The sweater is knit from the top down. Once you hit the bottom of the sweater, the vast majority of your work is already completed and your project is almost ready to wear. That seems pretty fantastic to me. In the first pic, I have the sweater waiting on my circular needle cable while I work on the sleeve.
I used a modified traveling loop that I first found a few year ago on YouTube to work the sleeves of the sweater. Liat Gat has fantastic knitting videos that are really well done. This is the video that I used to get me going on the sleeves. I might break down and buy a 16" circular needle if I make the sweater again. I think it might go faster if I didn't have to fiddle with the cable on every single round.